you wouldn't be complaining. Here is a rough cut of the issue. Embed codes can be used to embed more than audio and/or video. Hackers have figured out a way to inject malicious code using the embed tag. It is not easy to defend against something you openly allow to happen. Shutting it down, while not popular, is sometimes the only recourse until a resolution can be found.

I personally do not know why YouTube videos are allowed and others are not, but I assume it was either that they figured out a way to make sure the code that was coming from YouTube was authentic and non-malicious, or they worked out a security plan WITH You Tube and have not done so yet with other content providers.

Me, I would rather have a safe website than worry about some stupid video of a dancing bear someone says I "have to see".